1421351126693 has 4 divisors (see below), whose sum is σ = 1470363234540. Its totient is φ = 1372339018848.

The previous prime is 1421351126681. The next prime is 1421351126737. The reversal of 1421351126693 is 3966211531241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 716150910049 + 705200216644 = 846257^2 + 839762^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421351126693 - 2¹⁶ = 1421351061157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421351126653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24506053880 + ... + 24506053937.

It is an arithmetic number, because the mean of its divisors is an integer number (367590808635).

Almost surely, 2^{1421351126693} is an apocalyptic number.

It is an amenable number.

1421351126693 is a deficient number, since it is larger than the sum of its proper divisors (49012107847).

1421351126693 is an equidigital number, since it uses as much as digits as its factorization.

1421351126693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49012107846.

The product of its digits is 233280, while the sum is 44.

The spelling of 1421351126693 in words is "one trillion, four hundred twenty-one billion, three hundred fifty-one million, one hundred twenty-six thousand, six hundred ninety-three".